Compton散射下全内反射光子晶体光纤中的自相位调制  

Self-phase modulation in TIR-PCF under Compton scattering

作　　者：郝东山[1] 刘安辉[2] 

机构地区：[1]黄淮学院信息工程系,河南驻马店463000 [2]黄淮学院国际学院,河南驻马店463000

出　　处：《量子电子学报》2008年第5期605-609,共5页Chinese Journal of Quantum Electronics

基　　金：河南省教育厅自然科学基础研究计划项目(2007140010);河南省科技厅自然科学基础研究资助项目

摘　　要：应用多光子非线性Compton散射概念和电子与多光子集团非线性散射模型,建立了全内反射光子晶体光纤中耦合啁啾脉冲激光的输运方程,理论分析和数值模拟了该过程中Compton散射对自相位调制的影响。研究发现,散射光使耦合啁啾脉冲的自相位调制加强,光纤的感应电极化强度、反转粒子数密度和增益增大,相位变化加快,受激辐射截面减小,增益相移在自相位调制中的作用不可忽略。By using the multi-photon nonlinear Compton scattering conception and the model of the nonlinear scattering between an electron and a photon, the propagation equations of the laser amplification of the coupling chirped-pulse in the total internal reflective photonic crystal fiber are built. By theoretical analysis and numerical simulation, the influences of Compton scattering on the self-phase modulation of TIR-PCF are studies. The results show that the self-phase modulation of the coupling chirped-pulse laser is strengthened by the Compton scattering. The induction electrical polarization strength of the fiber, the density of the reversed particle number arid gain increase, the phase changing accelerates, and the excited radiation section decreases. Therefore, the gain phase movement can not be ignored.

关 键 词：非线性光学 全内反射光子晶体光纤 耦合啁啾脉冲 自相位调制 多光子非线性COMPTON散射 

分 类 号：TN24[电子电信—物理电子学]